Title:
表示装置
Document Type and Number:
Japanese Patent JP5042077
Kind Code:
B2
Abstract:
To provide a display device which can ensure high reliability of a driver circuit even when a threshold voltage of a TFT shifts. The display device includes a power supply control circuit (102) which can apply a forward bias voltage or a reverse bias voltage to a gate of a transistor (108,103) included in an output circuit, a monitor transistor (110) which is formed to monitor the amount of change of a threshold voltage of the transistor included in the output circuit, and a threshold control circuit (101) which controls the power supply control circuit (102) so as to apply the reverse bias voltage to the gate of the transistor in order to compensate the threshold voltage of the transistor included in the output circuit.
Inventors:
Hiroyuki Miyake
Atsushi Umezaki
Atsushi Umezaki
Application Number:
JP2008062257A
Publication Date:
October 03, 2012
Filing Date:
March 12, 2008
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
G09G3/30; G09G3/20; G09G3/36; H01L29/786; H01L51/50; (IPC1-7): G11C11/401; H01L27/108
Domestic Patent References:
| JP2007018299A | ||||
| JP8263028A | ||||
| JP8273387A | ||||
| JP5030278A |